METHOD AND APPARATUS FOR CONTROL CHANNEL OPERATION IN GERAN

• US 20100067440A1
• Filed: 08/11/2009
• Published: 03/18/2010
• Est. Priority Date: 08/12/2008
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: Dick, Stephen G., Rudolf, Marian, Aghili, Behrouz
• Granted Patent: US 8,942,187 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 27/3483 using a modulation of the constellation points
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/12 the signals being represented by different phase modulations of a single carrier
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

A method and apparatus to improve the quality of control signaling based on signaling messages controlling speech or data transmission over an air interface between at least two Multi-User-Reusing-One-Slot/Voice Services Over Adaptive Multiuser Channels On One Slot (MUROS/VAMOS) capable wireless transmit/receive units (WTRUs). The WTRUs communicate with each other at the physical layer via signaling messages transmitted in control channels such as Slow Associated Control Channel (SACCH) and Fast Associated Control Channel (FACCH). Speech services are provided simultaneously over the same physical channel, and the Timing Advance (TA) and Power Command (PC) parameters of a WTRU are multiplexed in several occurrences of the SACCH or FACCH to increase the number of channel bits available for channel coding.

Claims

1. A wireless transmit/receive unit (WTRU) comprising:

a receiver configured to receive a multiframe comprising a first orthogonal sub-channel (OSC) and a second OSC, the first and second OSCs each containing an Idle frame and a control channel frame, wherein a control channel frame of a first OSC overlaps with an Idle frame of a second OSC; and

a processor configured to decode one of the first or second OSCs and recover the control channel frame.

2. The WTRU of claim 1, wherein the control channel frame is a slow associated control channel (SACCH) frame or a fast associated control channel (FACCH) frame.

3. The WTRU of claim 1, wherein the receiver is configured to receive a multiframe that contains SACCH information in two frames.

4. The WTRU of claim 1, wherein the receiver is configured to receive a multiframe that contains layer three payload information and two layer one parameters.

5. The WTRU of claim 1, wherein a control channel frame is swapped with an Idle frame on a same OSC.

6. The WTRU of claim 1, wherein a control channel frame is shifted to an adjacent timeslot on a same OSC.

7. A base station (BS) comprising:

a channel allocator configured to generate a multiframe comprising a first orthogonal sub-channel (OSC) and a second OSC, the first and second OSCs each containing an Idle frame and a control channel frame, wherein a control channel frame of a first OSC overlaps with an Idle frame of a second OSC; and

a transmitter configured to transmit the generated multiframe.

8. The BS of claim 7, wherein the control channel frame is a slow associated control channel (SACCH) frame or a fast associated control channel (FACCH) frame.

9. The BS of claim 7, wherein the transmitter is configured to transmit a multiframe that contains SACCH information in two frames.

10. The BS of claim 7, wherein the channel allocator is configured to generate a multiframe that contains layer three payload information and two layer one parameters.

11. The BS of claim 7, wherein the channel allocator is configured to swap a control channel frame with an Idle frame on a same OSC.

12. The BS of claim 7, wherein the channel allocator is configured to shift a control channel frame to an adjacent timeslot on a same OSC.

13. A method for control channel operation comprising:

generating a multiframe comprising a first orthogonal sub-channel (OSC) and a second OSC, the first and second OSCs each containing an Idle frame and a control channel frame, wherein a control channel frame of a first OSC overlaps with an Idle frame of a second OSC; and

transmitting the generated multiframe.

14. The method of claim 13, wherein the control channel frame is a slow associated control channel (SACCH) frame or a fast associated control channel (FACCH) frame.

15. The method of claim 13, wherein the generated multiframe contains SACCH information in two frames.

16. The method of claim 13, wherein the generated multiframe contains layer three payload information and two layer one parameters.

17. The method of claim 13, wherein a control channel frame of the generated multiframe is swapped with an Idle frame on a same OSC.

18. The method of claim 13, wherein a control channel frame of the generated multiframe is shifted to an adjacent timeslot on a same OSC.